Folded box



3, 1949; B. H.BAR1 'ER 2,468,951

FOLDED BOX Filed Sept. 1, 1945 2 Sheets-Sheet 1 2 INVENTOR.

5.H.Bar%er '4 TTOPIVE Y5 B. H. BARTER May 3,1949.

FOLDED- BOX 2 Sheets-Sheet 2 Filed Sept. 1, 1945 il""i uvvszvrox. am,Barter- ATTORNEYS Patented May 3, 1949 FOLDED BOX Bert H. Barter, CoralGables, Fla., assignor to Great Southern Box Company,

Inc., New

Orleans, La., a corporation of Louisiana Application This inventionrelates to a box of craftboard or similar material, folded up from aone-piece blank. The invention includes both the box and the blank.

The general object of the invention is to provide a rectangular box ofunusual sturdiness, deriving its strength from the fact that it is ofdouble thickness at the corners, with sides and ends folded double alonglines that define the top edges of the box, to form inner and outer sideand end panel portions, the outer side panel portions having lateralflaps extending between the folds of the ends, and the inner end panelportions having lateral flaps extending between the folds of the sides,the said flaps being'firmly interlocked in immovable position by thepanel portions that enclose them, and in turn, supporting the sides andends of the box in rigid upright position.

Other objects of the invention will appear as the following descriptionof a preferred and practical embodiment thereof proceeds.-

In the drawings which accompany and form a part of the followingspecification: boFigure 1 is a perspective view of the assembled Figure2 is a plan view of the blank;

Figure 3 is a perspective view illustrating the first step of theassembling operation;

Figure 4 is a perspective view illustrating'the second step;

Figure 5 is a perspective view illustrating the third step; I

Figure 6 is a perspective view illustrating the final step;

Figure 7 is a vertical section taken along the line 1-1 of Figure 1;

Figure 8 is a'vertical section taken along the line 8-8 of Figure 1;

Figure 9 is a longitudinal section taken along the line 99 of Figure 1.'

"Referring now in detail to thedrawings, and first adverting to theblank shown in Figure 2 it consists of a rectangular bottom panel I,'from September 1, 1945, Serial No. 614,032

1 Claim. (Cl. 229-34) The outer side panel portions 2a are provided withthe lateral flaps a, while the inner end panel portions 312 are providedwith the lateral flaps b.

The lines of fold which demark the contiguous boundaries of the panels,panel portions and flaps are indicated in broken lines in Figure 2.vReferring to Figure 2, in the folding of thebox, every element is foldedalong the lines of fold toward the observer, that is, upward from theplane of the sheet, excepting the lateral flaps b, which are folded awayfrom the observer, that is, downward below the plane of the sheet. The

back folding of the flaps b is well shown in Figure 4.

The assembled box is shown in Figure 1. The sequence of assemblage is asfollows: The side panels 2 are first up-folded from the bottom panel, asshown in Figure 3, with the flaps a folded so as to lie in the planes ofthe ends of the box. The end panels 3 are then up-folded from the bottompanel I, as indicated in Figure 4, so that the outer panel portions 3arest uprightly against theouter sides of the flaps (1. Then the flaps bof the inner end panels 312 are folded back, as shown in Figure 4. Next,the inner end panel portions 3b are folded inwardly and downwardly overthe adjacent flaps it, until parallel with the outer end panel portions3a, as shown in Figure 5, thus closely enfolding the flaps a, and at thesame time bringing the flaps b downward against the inner sides of theouter side panel portions 211. The inner side panel portions 21) arethen folded inwardly and downwardly over the adjacent flaps b, untilparallel with the outer side panel portions 2a, closely enfolding theflaps b, as shown in Figure 6. When in this position, the lateral edgesof the inner side panel portions 2b bear against the inner end panelportions 3b and hold them in place. If the inner and outer side panelportions are of equal height, the bottom edges of the inner side 'panelportions '2b will bear frictionally against the bottom panel and holdthe inner side panel portions in place. The contents of the box may alsoperform this function. However, it is possible that positive holdingmeans may be desirable, such as the tongues 4 projecting from the freelongitudinal edges of the inner side panel portions, which are forcedinto slots 5 formed in thebottom panel I.

It will be-noted from Figure 2 that since the inner and outer panelportions of the respective sides and ends straddle the flaps of therespective ends and sides, the lines of fold betweenthe inner and outerpanel portions are defined by double score marks slightly spaced, givingappreciable width to the line of fold. It is these lines of told thatform the top edges of the assembled box.

Figures 3, 4, 5, and 6, for the sake of clarity. indicate the sequenceof operations only with respect to one side and end, the other side andend being shown fllat.

The above construction results in a sturdy and non-deformable box. Thelateral flaps from adjacent sides and ends lap at the corners, providingclosed corners of double thickness, as shown at 6 in Figure 9, and theside and end walls are of triple thickness in all cross-sections thatinclude the flaps, as shown in Figures '7, 8 and 9. The interfittingrelation of the flaps between the close folded panel portions of thesides and ends and the fact that the top edges of the flaps fit closelyagainst the inner angle of fold between said panel portions inhibitstilting movement of the flaps, resisting any force from within thatwould tend to spread the corners and thus maintains the sides and endsin rigid upright position.

It will be noted that the upper corners 1 of the flaps b are re-entrant,providing a cavity within the side walls of the box between the outerand inner side panel portions, part of which cavity is indicated at 8 inFigure 5, and that each side panel 2 is provided with a slot 9 in theline of fold between the side panel portions, which slot appears in thetop edge of the box, as shown in Figure 1. Each of the outer side panelportions 2a is provided with a slot in vertical alignment with andparallel to the slot l0, both slots opening into the cavity 8, as shownin Figure 5.

Said slots and the cavity form a conduit for a strip of metal-or thelike, not shown, which may be associated with any type of closure, notforming part of the present invention, and therefore not shown, forsecuring the closure. The ends of the strip may be inserted in the slots10, passed through the cavities 8 and out of the slots 9, and have itsends suitably secured.

While I have in the above description disclosed what I believe to be apreferred and practical embodiment of the invention, it will beunderstood to those skilled in the art that the specific constructionand arrangement 01' parts is by way of example and not to be construedas limiting the scope of the invention.

What I claim as my invention is:

Box assembled from a one piece folded blank, comprising a rectangularbottom, side and end panels upstanding therefrom, said side and endpanels each comprising an outer panel portion integrally connected tosaid bottom, an inner panel portion parallel to said outer panel portionand substantially congruent therewith, and a connecting portion betweensaid outer and inner side panel portions at the top of said side paneldefined by spaced parallel score lines of such width as to space saidpanel portions a distance equal to the thickness of the stock of saidblank, said connecting portion being formed with a slot therethrough atits middle, in width equal substantially to the width of said portionlateral flaps emanating from the inner end panel portions each in lengthbein equal substantially to one-half the length of said side panels andin height being substantially equal to the height of the space betweensaid inner and outer side panel portions, the flaps from correspondingends of adjacent end panels lying between the inner and outer side panelportions forming an intermediate side panel portion, the upper adjacentcorners of said flaps being notched to form a cavity in conjunction withsaid inner and outer side panel portions and beneath said slot, saidouter panel portions below said connecting portions being each providedwith a slot below said first mentioned slots, communicating with saidcavity, the parts of each outer side panel portion between said slotsdefining a bar adapted to be embraced by a securing band, said innerside panel portion being imperforate in that region which forms theinner wall of said cavity.

BERT H. BARTER.

REFERENCES The following references areof record in the file of thispatent:

UNITED STATES PATENTS

